Handwritten shallowreadonly and readonly

1、shallowReadonly

const shallowReadonlyHandler = {
    get(target,prop){
        console.log(' Performed data acquisition operation ');
        return Reflect.get(target,prop);
    },
    set(target,prop,val){
        console.warn(' Read only data cannot be changed or added ');
        return true;
    },
    deleteProperty(target,prop){
        console.warn(' Read only data cannot be deleted ');
        return true;
    }
}
const shallowReadonly = (target) => {
    if(target && typeof target === 'object'){
        return new Proxy(target,shallowReadonlyHandler);
    }
    return target;
}
const user = shallowReadonly({
    name:'Agwnebi',
    age:25,
    car:{
        name:' BMW ',
        color:'blue'
    }
})
console.log(user.name);
user.age = 26;
console.log(user);

2、readonly

const readonlyHandler = {
    get(target,prop){
        console.log(' Data reading operation is performed ');
        return Reflect.get(target,prop);
    },
    set(target,prop,val){
        console.warn(' Read only data cannot be changed or added ');
        return true;
    },
    deleteProperty(target,prop){
        console.warn(' Read only data cannot be deleted ');
        return true;
    }
}
const readonly = (target) => {
    if(target && typeof target === 'object'){
        if(Array.isArray(target)){
            target.forEach((item,index) => {
                target[index] = readonly(item);
            });
        }else{
            Object.keys(target).forEach(key => {
                target[key] = readonly(target[key]);
            });
        }
        return new Proxy(target,readonlyHandler);
    }
    return target;
}
const user = readonly({
    name:'Agwnebi',
    age:25,
    car:{
        name:' BMW ',
        color:'blue'
    }
})
console.log(user.name);
user.age = 26;
console.log(user);